Reinforcement for pneumatic tires.



A. L. MURRAY.

RBINFORGEMBNT FOB. PNEUMATIU TIRES. APIfLIoATIoN FILED Nov. 27. 190s.

' Patented July 12,1910.

Tao entras PATENT OFFICE .ALBERT LINN MURRAY, OF GI? AND RAPIDS, MICHIGAN, ASSIGNOR 0F ONE-HALF TO' SHAWMUT TIRE COMBANY e A CORPORATION OF MASSACHUSETTS.

REINFORCEMENT FOR PNEUMATIC TIRES.

Speoincaton of Letters Patent.

Application led November 27, 1908. Serial No. 464,576;

To all whom it may concern:

Be it known that I, ALBERT lnNN illumini', a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michi an, have invented certain new and useful Improvemer ts in Reinforcements for PneumaticTires, ol' which the following is a specification.

lily invention relates to improvements in what are known as blow-out patches or devices designed to enable blow outs or cuts in the oilter cases or shoes of double tube pneumatic tires to betemporarily repai ed.

The object of the invention is to prov f e such a patch which will be free from a'll metallic parts or retaining devices, will be strongfand durable, which will make the repaired tire ride smoothly, and which may be easily and quickly applied and which prevents the blowing out of the inncr tube irrespective of the size or location of the damaged portion of the outer case, and which will not project or bulge into the rupture in the outer case or shoe, and thereby tend to enlarge the same.

A blow out patch embodying my invention is illustrated in the accompanying drawings, in which Figure l is a perspective View; Fig. 2 is a transverse section with the patch in place within a tire applied to a rim, the inner tube being omitted; Fig. 3 is a transverse ,y section online 3&3 of F ig. l; and Figs. fl, 5, 6 and 7 are sectional details.

have occurred at Referring by reference characters to this drawing, l designates the body proper of the patch which is made of ru )ber and fabric, the latter in a plurality of layers, 2, depend-ing in number on the weight or strength of patch desired or the size of the tire to which it is to be applied. The outer layers are also preferably of successively dccreased length as clearly shown in the sectional View, so that the patch increases in thickness toward the center. One or more layers or piles of the fabric, preferably the inner one 4, is extended on both sides to form the marginal fla is 4, these flaps being impregnated with rub ier.

'The manner of applying the patch in case of ablowont will be clear from an inspeotion of'Figs. 2, t and 8. 'In these two latter views, d is a longitudinal section on line SWS 'Fig'. 2 supposing a blowout to that point, and Fig. 6 isa transverse section taken centrally throu h the blowout, the blowout being designate 5 in both views. In applying the patch, the body is placed around the inner tube shown), and with the center 6 of the patch opposite blowout opening 5. the atch corresponds in size to the interior of tie outer case or shoe, and the flexible edges 4 are passed around the edges of the case or shoe, so that when the shoe is applied to the rim 4, as indicated in Fig. 2, the patch is clamped between the flanges of the rim and the edges or beads of the shoe, and, of course, the inflation of the inner tube only serves to bind them the ti liter.

The body of the shoe, is ma( e up in substantiallythe same minier as isthe body of the tire, that is, of fabric which, in formation, is lsubjected to a tension equal to that commonly used in the manufacture of the fabric part of pneumatic tires, being vulcanized while in this tense condition. The result of this is that when the atch is placed within the upper shoe and t e inner tube inflated with a proper pressure, the shoe retains its circular form, and will not bulge or projectv into the opening, as has heretofore been common with such non-metallic patching devices of which I am aware.

Such projection or bulging is very objectionable, and where this takes place, produces results such as indicated in Figs. 5 and 7, which are sections similar to Figs. 4 and 6, such projection not only causing the tire to ride roughly or bump as it goes around, but causing excessive wear and enlargement of the ruptured part. f

Having thus described my invention what I claim is As a new article of manufacture, a tire repair device comprising a body portion composed of a plurality `f layers of rubber coated fabric in a tenselr or stretched condition, and conforming in shape to the section of the tire, the Vinner layer of fabric being extended to form integral flexible flaps projectingfrom the opposite side edges of said body portion, substantially as described.

In testimony whereof I aiiix my signature, in presence of two Witnesses.

M. S. WEAVER, Bassin D. RILEY.

(not

The body of Patented July 12, 1910. 

